RE: Duplicate function is a lot longer than a backup
- From: "Jeffrey Beckstrom" <JBECKSTROM@xxxxxxxxx>
- To: "oracle-l-freelists" <oracle-l@xxxxxxxxxxxxx>, <Brandon.Allen@xxxxxxxxxxx>
- Date: Mon, 30 Nov 2009 15:14:19 -0500
No RAID 5 in use.
The target server houses all of our non-production databases which are
mostly idle.
>>> "Allen, Brandon" <Brandon.Allen@xxxxxxxxxxx> 11/30/09 3:11 PM >>>
Is it possible that you’re writing to RAID 5 on the target and that’s
slowing it down compared to faster disks where you’re writing the
backups?
It’s been a while since I tested it, but if I recall correctly, there
was more overhead for decompression during the restore than for
compression during the backup. That was years ago that I tested it
though so I’m not too sure, but it might be worth trying without
compression to see how that affects your times.
Also, how does the load compare on the two servers – is there a higher
level of concurrent activity on the target server during the duplicate?
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